London Zoo measures up

By Photos by AP and Getty

on August 21, 2014 9:34 PM

Photo: Oli Scarff/Getty Images

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A squirrel monkey looks into the camera during a photocall at London Zoo, Thursday, Aug. 21, 2014. The Zoo held it's annual weigh-in where the vital statistics of animals were taken in an aid for keepers to detect pregnancies and check the animals general wellbeing. less

A squirrel monkey looks into the camera during a photocall at London Zoo, Thursday, Aug. 21, 2014. The Zoo held it's annual weigh-in where the vital statistics of animals were taken in an aid for keepers to ... more

Photo: Kirsty Wigglesworth, Associated Press

A squirrel monkey looks into the camera during a photocall at... Photo-6758078.92117 - Houston Chronicle

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A Partula snail weighting 1mg is held next to an African Land Snail weighing 480kg during the annual weight-in ZSL London Zoo on August 21, 2014 in London, England. The height and mass of every animal in the zoo, of which there are over 16,000, is recorded and submitted to the Zoological Information Management System. This is combined with animal measurement data collected from over 800 zoos and aquariums in almost 80 countries, from which zoologists can compare information on thousands of endangered species. less

A Partula snail weighting 1mg is held next to an African Land Snail weighing 480kg during the annual weight-in ZSL London Zoo on August 21, 2014 in London, England. The height and mass of every animal in the ... more

Photo: Oli Scarff, Getty Images

A Partula snail weighting 1mg is held next to an African Land Snail... Photo-6758071.92117 - Houston Chronicle

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A rare partula snail, which is extinct in the wild and one of the world's smallest snails, is pictured during the annual weigh-in to record animals vital statistics at ZSL London Zoo in London on August 21, 2014. less

A rare partula snail, which is extinct in the wild and one of the world's smallest snails, is pictured during the annual weigh-in to record animals vital statistics at ZSL London Zoo in London on August 21, ... more

Photo: CARL COURT, AFP/Getty Images

A rare partula snail, which is extinct in the wild and one of the... Photo-6758081.92117 - Houston Chronicle

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Photographers capture a 'mossy frog' being weighed at 37g during the annual weight-in ZSL London Zoo on August 21, 2014 in London, England.

Photographers capture a 'mossy frog' being weighed at 37g during the annual weight-in ZSL London Zoo on August 21, 2014 in London, England.

A keeper measures Perry the Llama during a photocall at London Zoo, Thursday, Aug. 21, 2014. The Zoo held it's annual weigh-in where the vital statistics of animals were taken in an aid for keepers to detect pregnancies and check the animals general wellbeing. less

A keeper measures Perry the Llama during a photocall at London Zoo, Thursday, Aug. 21, 2014. The Zoo held it's annual weigh-in where the vital statistics of animals were taken in an aid for keepers to detect ... more

Photo: Kirsty Wigglesworth, Associated Press

A keeper measures Perry the Llama during a photocall at London Zoo,... Photo-6758079.92117 - Houston Chronicle

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Keepers Jack Sargent, left, and Adam Davies measure Perry, a 6ft llama, and Mocha, a 4 month-old llama at 140cm, during the annual weight-in ZSL London Zoo on August 21, 2014 in London, England.

Keepers Jack Sargent, left, and Adam Davies measure Perry, a 6ft llama, and Mocha, a 4 month-old llama at 140cm, during the annual weight-in ZSL London Zoo on August 21, 2014 in London, England.